JP4053454B2 - Bag stopper and chemical solution bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bag stopper that seals a mouth portion of a liquid medicine bag in which a liquid medicine for infusion, blood for transfusion, and the like are enclosed, and a liquid medicine bag that has the bag stopper attached to the mouth.
[0002]
[Prior art]
As shown in FIG. 8, the drug solution bag 100 contains a drug solution for infusion, blood for transfusion, and the like. The medicinal solution bag 100 is sealed by attaching the bag stopper 102 to the mouth portion 101 after the medicinal solution is sealed in a sterile room or the like (Patent Document 1). A bag plug 102 for sealing the mouth part 101 of the chemical solution bag 100 is welded to a rubber stopper 103 and a flange 104 provided in the mouth part 101 of the chemical solution bag 100, and the rubber stopper 103 is attached to the mouth part 101 of the chemical solution bag 100. And a cap member 105 to be fixed. Extraction of the chemical solution in the chemical solution bag 100 is performed by inserting an injection needle or a plastic plastic needle into the rubber stopper 103 from the opening 106 at the top of the cap member 105.
[0003]
The plastic needle 110 shown in FIG. 9 has a hollow needle shaft with a tip 111 reduced in the shape of a rocket head, and has a mounting portion 113 for a tube 112 of an infusion pipe such as an infusion set on the base end side. A hole 114 opened in the hollow portion is formed on the side peripheral surface. The hollow portion of the plastic needle 110 becomes a flow path 115 for the chemical solution. The plastic needle 110 is used by attaching a tube 112 such as an infusion set to the proximal end side and piercing the rubber stopper 103 of the bag stopper 102 of the drug solution bag 100. The medicinal solution in the medicinal solution bag 100 is extracted from a hole 114 formed on the distal end side of the plastic needle 110 through the flow path 115 inside the plastic needle 110 to a tube 112 of an infusion piping such as an infusion set.
[0004]
[Patent Document 1]
JP-A-6-315948
[0005]
[Problems to be solved by the invention]
When a needle is inserted into the rubber stopper 103 of the bag stopper 102, the used needle has a problem that requires careful consideration for disposal in order to prevent contamination of pathogenic bacteria. There was a problem that the cost increased by the amount. In recent years, there has been a problem such as misfiring of the injection needle, and there is a desire to reduce the use of the injection needle. For this reason, the plastic needle 110 described above has been proposed as an instrument for insertion into the rubber stopper 103 instead of the injection needle.
[0006]
However, the rubber plug 103 of the conventional bag plug 102 has the required thickness and rigidity so that it can withstand even if it receives pressure from the liquid in the chemical solution bag 100, and it is difficult to pierce with a plastic plastic needle. It has become. For this reason, in the medical field, as an instrument for insertion into the rubber stopper 103, an injection needle that is easier to pierce than the plastic needle 110 made of plastic is often used. In addition, the plastic needle 110 is used as an instrument that pierces the rubber stopper 103 of the bag stopper 102 of the drug solution bag 100 instead of the injection needle, but there is a problem that the plastic needle 110 is easily dropped from the bag stopper 102. Also, the plastic needle 110 has a larger outer diameter than the metal injection needle, and when the plastic needle 110 is pierced, the rubber stopper is likely to crack, and the liquid medicine bleeds to the outside due to capillary action along the crack. Prone to problems that occur.
[0007]
In medical practice, two plastic needles are often inserted into the rubber stopper at the same time, but when the plastic needle is inserted obliquely, the needle holes are close to each other near the outlet of the rubber stopper, There are cases where cracks from the needle holes are connected and become large, or plastic needles that have come out of the stopper come into contact with each other and the cracks become large due to the pressing force, and there is a problem that the chemical liquid oozes out. In many cases, the plastic needle is left in a state where the plastic needle is stuck in the rubber stopper of the chemical solution bag for a long time. In such a case, the plastic needle is inserted when an external force is applied from a pipe or the like. As a result, the plastic needle may be shaken to create a gap between the needle and the hole, causing a problem that the chemical liquid oozes out. When such a problem occurs, it is necessary to apply a measure such as attaching the tape to a location where the chemical solution oozes out to prevent the chemical solution from oozing out.
[0008]
Therefore, the present invention has an object to provide a bag stopper and a chemical solution bag in which a plastic needle is easy to pierce, the pierced plastic needle is difficult to drop, and further, a chemical solution does not leak to the outside when the plastic needle is pierced. It is said.
[0009]
[Means for Solving the Problems]
  The bag stopper according to the present invention isA bag stopper attached to the mouth of the chemical solution bag,A cylindrical bag plug body having a blocking wall that cuts off the chemical solution side and the external side inside, and a region outside the bag plug body from the blocking wall, are attached to the outer end face of the bag bag body, and is normally closed. A rubber stopper having one or a plurality of plastic needle insertion portions recessed in a conical shape with holes formed in the bottom;Guide part with concave film part recessed below so as to fit into the dent of plastic needle insertion partAnd have.
  Further, a bag plug attached to the mouth portion of the chemical solution bag, a cylindrical bag plug main body having a blocking wall for blocking the chemical solution side and the external side inside, and an area outside the blocking wall of the bag plug main body A rubber plug having one or more plastic needle insertion portions that are recessed in a conical shape with a normally closed pore formed in the bottom, and a recess in the plastic needle insertion portion. A plurality of guide pieces extending along the guide portion are disposed in the circumferential direction along the depression of the plastic needle insertion portion.
[0010]
  The plastic needle insertion part of the rubber stopper of this bag stopperGuide sectionEnsures that when the plastic needle is stabbed, the plastic needle stabs straight against the rubber stopper. Thereby, when a plastic needle is stabbed, it can prevent that a chemical | medical solution leaks outside. Further, the blocking wall prevents the chemical solution and the rubber stopper from coming into contact with each other, particularly when the chemical solution is stored for a long period of time, and prevents the rubber component from eluting into the chemical solution.
[0012]
The concave film portion or the guide piece may have a rib on the surface thereof. In this case, when the plastic needle is inserted into the concave film part or the guide piece, the amount of elastic deformation in the vicinity of the plastic needle insertion part of the rubber stopper is equal to the rib provided on the surface of the concave film part or the guide piece. The elastic reaction force in the radial direction of the rubber plug is increased, and the support force of the plastic needle can be increased.
[0013]
  Also a guidePartMay have a protrusion protruding in the vertical direction around the recess of the plastic needle insertion portion.
[0014]
  Further, a bag plug attached to the mouth portion of the chemical solution bag, a cylindrical bag plug main body having a blocking wall for blocking the chemical solution side and the external side inside, and an area outside the blocking wall of the bag plug main body A plurality of plastics that are recessed in a conical shape and are formed at predetermined intervals in the circumferential direction with a predetermined radial distance on the outer side end face of the rubber plug, and normally closed pores are formed at the bottom. A needle insertion portion and a concave portion that can be pierced with a plastic needle, and a guide portion having a required width in the circumferential direction so as to cover several plastic needle insertion portions among the plurality of plastic needle insertion portions. You may have.
[0015]
  Further, a bag plug attached to the mouth portion of the chemical solution bag, a cylindrical bag plug main body having a blocking wall for blocking the chemical solution side and the external side inside, and an area outside the blocking wall of the bag plug main body A plurality of plastics that are recessed in a conical shape with pores that are normally closed at the bottom and are provided at predetermined intervals in the circumferential direction with the same radial distance on the outer end face of the rubber plug. It may be provided with a needle insertion portion and a guide portion provided on the rubber stopper and provided with protrusions continuous in the circumferential direction on the inner diameter side and the outer diameter side of the plastic needle insertion portion.. in this case,Guide sectionIt is desirable that a concave film portion that can be pierced with a plastic needle is provided between the inner diameter side protrusion and the outer diameter side protrusion.
  In addition, in any of the above back stoppers,A portion having an increased inner diameter may be provided in the middle portion of the pore of the plastic needle insertion portion to reduce resistance when the plastic needle is pierced at the middle portion of the pore so that the plastic needle is pierced straight.
[0016]
In addition, the rubber plug is composed of a first rubber plug that is attached to the outer side region of the bag plug body and has a plastic needle insertion portion, and a second rubber plug that is mounted between the first rubber plug and the blocking wall. Good. The second rubber stopper acts as a first seal member for preventing leakage of the chemical liquid between the second rubber stopper and the first rubber stopper when the plastic needle is stuck. It is possible to prevent the chemical liquid from leaking outside between the rubber plug and the second rubber plug. Further, the second rubber stopper contributes to the action of holding the plastic needle of the bag stopper straight. In this case, it is desirable to provide a gap between the first rubber plug and the second rubber plug, and the surface of the first rubber plug facing the second rubber plug is raised at a position corresponding to the plastic needle insertion portion. It is desirable that
[0017]
The chemical solution bag having these bag stoppers attached to the mouth portion can be held in a state where the plastic needle is punctured straight when the plastic needle is punctured, and can be made into a chemical solution bag that does not leak. In addition, even when two plastic needles are inserted at the same time, or when the plastic needle is left in the bag for a long time, problems such as leakage of the chemical solution and removal of the plastic needle can be eliminated.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a bag stopper and a chemical solution bag according to the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member and site | part which show | plays the same effect | action, and the overlapping description is abbreviate | omitted.
[0019]
As shown in FIGS. 1A and 1B, a bag plug 1 according to the first embodiment includes a cylindrical bag plug body 2, first and second rubber plugs 3 attached to the bag plug body 2, 4 and a cap member 5 attached to the upper end opening of the bag stopper main body 2.
[0020]
The bag plug body 2 is a substantially cylindrical member, and has a flange 11 to be fused to a flange 52 (see FIG. 2A) of the mouth 51 of the chemical solution bag 50 at the lower end. An engagement portion 12 for mounting the cap member 5 is provided on the outer periphery of the bag stopper main body 2. As shown in FIG. 1, a blocking wall 13 for blocking the inside of the bag plug main body 2 from the chemical solution side to the external side is provided at an intermediate portion inside the bag plug main body 2. The peripheral edge portion 13a of the blocking wall 13 has a required thickness and rigidity, and supports the second rubber plug 4 attached to the bag plug main body 2. The central portion 13b of the blocking wall 13 is formed to be thinner than the peripheral portion 13a, so that the resistance when piercing the plastic needle 110 is reduced, and the plastic needle 110 can be easily pierced. Yes.
[0021]
In the bag plug body 2, the second rubber plug 4 mounted on the blocking wall 13 is a substantially disc-shaped rubber material, and can easily pierce the plastic needle 110. It is manufactured using a soft rubber (for example, silicone rubber) that is easy to pierce and does not easily crack so that the hole pierced by the plastic needle 110 does not tear when it is pierced. The peripheral edge 15 of the second rubber plug 4 protrudes upward in order to form a gap S between the second rubber plug 4 and the first rubber plug 3.
[0022]
The first rubber plug 3 mounted on the second rubber plug 4 in the bag plug main body 2 is a substantially disc-shaped rubber member, and includes a plurality (three in the illustrated example) of plastic needle insertion portions 20. Have. As shown in FIG. 1 (b), the plastic needle insertion portion 20 has a conical recess 21 and a pore 22 having a depth from the center bottom portion to an intermediate position of the first rubber plug 3. In this embodiment, the pores 22 do not penetrate the first rubber plug 3, but they may penetrate the first rubber plug 3.
[0023]
The first rubber plug 3 has a diameter that is slightly larger than the inner diameter of the bag plug main body 2, or has a protrusion that protrudes partially in the outer diameter direction in the circumferential direction. It is larger than the inner diameter, and is press-fitted into the bag plug body 2. As a result, the pore 22 provided in the plastic needle insertion portion 20 is normally closed by receiving the elastic reaction force from the periphery and the inner peripheral surface of the pore 22 being crimped. In this embodiment, the contact portion between the first rubber plug 3 and the second rubber plug 4 is provided with a protrusion 23 on the upper end of the second rubber plug 4 and a recess 24 on the lower surface of the first rubber plug 3. Are fitted together. Further, the lower surface of the first rubber plug 3 swells a position 29 corresponding to the plastic needle insertion portion 20. For the first rubber plug 3, for example, a rubber material that is usually used for a rubber plug of a chemical solution bag, such as butadiene rubber or butyl rubber, may be used.
[0024]
Next, as shown in FIG. 1B, the cap member 5 is a member that is mounted so as to cover the upper end opening (external opening) of the bag plug main body 2, and the plastic needle insertion of the first rubber plug 3 A guide portion 25 is provided at a position corresponding to the portion 20 as guide means for guiding the plastic needle 110 so as to be pierced straight and supporting the inserted plastic needle 110 straight.
[0025]
The guide portion 25 includes a conical concave film portion 26 that is recessed downward so as to fit into a hollow of the plastic needle insertion portion 20 formed in the first rubber plug 3, and a cap member around the concave film portion 26. 5 has an annular protrusion 27 projecting from the upper surface of 5. The concave film portion 26 is thin as a whole, and the thickness gradually decreases toward the bottom side of the recess so that the bottom portion is particularly easily broken. Further, the concave film portion 26 is provided with ribs 28 extending radially from the bottom portion as shown in FIG. Further, the depression of the concave film portion 26 has a vertical cross section at a predetermined angle corresponding to the shape of the tip of the plastic needle 110 to be inserted. The tip of the concave portion 26 is preferably thin so that it can be easily broken by the plastic needle 110, and more preferably the tip may be open. The annular protrusion 27 is formed with an inner diameter that is slightly larger than the outer diameter of the plastic needle 110, and guides the plastic needle 110 when the plastic needle 110 is inserted.
[0026]
As shown in FIG. 2 (b), the bag plug 1 is attached by fusing the flange 11 of the bag plug body 2 to the flange 52 of the mouth 51 of the chemical solution bag 50. When the drug solution bag 50 is used by drip or the like, as shown in FIG. 3, the drug solution bag 50 is suspended with the mouth 51 to which the bag stopper 1 is attached facing downward.
[0027]
When the plastic needle 110 is inserted into the guide portion 25 of the bag stopper 1, the tip of the plastic needle 110 fits into the concave portion 26 of the guide portion 25 of the cap member 5 as shown in FIG. The insertion position is automatically positioned, and the plastic needle 110 can be set straight with respect to the guide portion 25.
[0028]
When the plastic needle 110 is inserted, as shown in FIG. 4, the plastic needle 110 penetrates the concave film portion 26 of the guide portion 25, the first rubber plug 3, the second rubber plug 4 and the blocking wall 13 in order. The tip reaches into the medical solution bag 50.
[0029]
The guide portion 25 guides the plastic needle 110 together with the annular protrusion 27 so that the plastic needle 110 is inserted straight into the first rubber stopper 3 by the concave film portion 26 pierced by the plastic needle 110.
[0030]
Since the concave film portion 26 of the guide portion 25 is provided with ribs 28 that protrude radially from the bottom portion, the concave film portion 26 is torn and broken along the ribs 28. Further, by providing the rib 28 on the concave film portion 26, the amount by which the concave film portion 26 pushes the first rubber plug 3 increases, and the deformation amount of the first rubber plug 3 near the plastic needle insertion portion 20 increases. For this reason, the force (guide action) that the concave portion 26 supports the plastic needle 110 from the circumferential direction increases. Further, by providing the rib 28 on the surface of the concave film portion 26 of the guide portion 25, the contact area between the plastic needle 110 and the concave film portion 26 is reduced, so that the resistance when the plastic needle 110 is pierced can be reduced. The plastic needle 110 can be easily pierced.
[0031]
When the plastic needle 110 is inserted, the plastic needle 110 is guided by the annular protrusion 27 of the guide portion 25 and is also guided by the pierced concave film portion 26, so that the plastic needle insertion portion 20 of the first rubber plug 3 Stings straight into the pore 22. Since the plastic needle 110 is pierced straight along the pore 22 of the first rubber plug 3, the plastic needle 110 can be pierced straight into the first rubber plug 3.
[0032]
After the plastic needle 110 breaks through the guide portion 25, as shown in FIG. 4, the plastic needle 110 breaks straight through the first rubber plug 3, the second rubber plug 4, and the blocking wall 13 in order, and reaches the chemical solution bag 50. Thus, in this bag stopper 1, since the plastic needle 110 can be pierced straightly, the first rubber stopper 3 and the second rubber stopper 4 are hardly cracked, and the liquid medicine is prevented from oozing out due to a capillary phenomenon. can do. Further, since the plastic needle 110 inserted into the bag plug 1 is guided by the guide portion 25 and stabs straight into the rubber plugs 3 and 4, it is straightened by the first rubber plug 3 and the second rubber plug 4. It is firmly held in the state of being stuck in. Further, the first rubber plug 3 and the second rubber plug 4 are in close contact with the outer periphery of the plastic needle 110, and it is difficult for a gap to be formed between the plastic needle 110 and each of the rubber plugs 3 and 4, so that the chemical solution leaks to the outside. There is nothing.
[0033]
Further, when a normal drip is used, an external force may be applied to the plastic needle 110 so as to suddenly remove the plastic needle 110 from the bag stopper 1 through a plastic pipe attached to the plastic needle 110, for example. . In such a case, the close contact of the second rubber plug 4 may partially loosen in the circumferential direction for a moment, but since the chemical solution first leaks into the gap S between the first rubber plug 3 and the second rubber plug 4, Does not leak. Further, since the position 29 corresponding to the plastic needle insertion portion 20 on the lower surface of the first rubber plug 3 is raised, the chemical liquid leaking into the gap S is accumulated at a position away from the plastic needle insertion portion 20, and the plastic needle insertion portion 20. Will not leak to the outside. In this embodiment, the contact portion between the first rubber plug 3 and the second rubber plug 4 is provided with a protrusion 23 at the upper end of the second rubber plug 4 and a recess 24 on the lower surface of the first rubber plug 3. By fitting these together, the contact area is increased and liquid leakage to the outside is prevented.
[0034]
The bag stopper according to the first embodiment of the present invention has been described above, but the bag stopper according to the present invention is not limited to the above-described embodiment.
[0035]
  For example, as a preferred embodiment, the guide portion 25 described above is a combination of the concave film portion 26 and the annular protrusion 27, and the concave film portion 26 and the annular protrusion 27 cooperate to pierce the plastic needle 110 straight. Although the embodiment having the function of guiding the plastic needle 110 has been illustrated, the concave film portion 26 and the annular protrusion 27 described above each have a function of guiding the plastic needle 110 so as to be pierced straightly. Therefore, the “guide” of the present inventionPart"Only the concave portion 26 of the above embodiment and no annular protrusion 27"Form may be sufficient.
[0036]
Further, the guide portion 25 is exemplified as having a conical concave portion 26 which is continuous in a film shape in the circumferential direction along the recess 21 of the plastic needle insertion portion 20 of the first rubber plug 3. In order to facilitate the insertion of the guide piece, a plurality of guide pieces extending from the annular protrusion 27 along the recess 21 of the plastic needle insertion portion 20 of the first rubber plug 3 are replaced with the concave film portion 26. It may be provided at predetermined intervals in the circumferential direction. According to this guide portion, when the plastic needle 110 is inserted, the distal end side of the guide piece is pushed and spread by the plastic needle 110, and the plastic needle 110 is guided so that the plastic needle 110 is inserted straight into the first rubber stopper 3. can do. In this case, the resistance of the guide portion when the plastic needle 110 is inserted can be reduced as compared with the case where the plastic needle 110 is inserted through the concave film portion 26. Such a guide piece may be formed by intermittently cutting the concave film portion 26 described above from the center of the concave film portion 26 at a predetermined interval in the circumferential direction.
[0037]
Further, by providing a protrusion on the surface of the concave film portion 26 formed on the guide portion and the above-described guide piece, when the plastic needle 110 is inserted, the vicinity of the plastic needle insertion portion 20 of the first rubber plug 3 can be seen. It can be greatly deformed. Thereby, when the plastic needle 110 is inserted, the elastic reaction force of the first rubber plug 3 is increased, and the supporting force of the plastic needle 110 can be increased. In this case, the surface on which the protrusion is provided may be a surface on the side exposed to the outside, or a surface on the side in contact with the rubber stopper. In addition, since the contact area between the plastic needle 110 and the concave film portion 26 or the guide piece can be reduced by providing a protrusion on the surface exposed to the outside, the resistance when the plastic needle 110 is inserted is reduced. can do. In the guide part 25 shown in FIG. 1, the rib 28 provided on the surface of the concave film part 26 has the same action as this protrusion.
[0038]
Next, the bag stopper according to the second embodiment will be described. In addition, about the member or site | part which show | plays the same effect | action as the bag stopper which concerns on 1st Embodiment, the same code | symbol as the bag stopper which concerns on 1st Embodiment is attached | subjected and demonstrated.
[0039]
As shown in FIGS. 5A to 5C, the bag plug 60 has a plurality of plastic needle insertion portions 20 provided at equal intervals in the circumferential direction at the same radial distance from the center of the first rubber plug 3. Yes. (In the illustrated example, six plastic needle insertion portions are provided at intervals of 60 degrees.) Further, the cap member 5 is located in the radial direction relative to the position where the plastic needle insertion portion 20 is provided in the first rubber plug 3. In addition, the projections 61 and 62 that are continuous in the circumferential direction on the inner diameter side and the outer diameter side, respectively, and the concave film portion 63 that can be broken by the plastic needle 110 provided between the inner diameter side projection 61 and the outer diameter side projection 62. The guide part 64 provided with these is provided.
[0040]
The concave film portion 63 gradually decreases in thickness toward the center in the longitudinal cross section in the radial direction, and the center is thin enough to be easily pierced by the plastic needle 110. Such a concave film portion 63 may be formed of a flexible plastic material, and is transparent so that the center of the plastic needle insertion portion 20 of the first rubber plug 3 can be seen through the concave film portion 63. It is recommended to use the plastic material. In addition, the concave film portion 63 is arranged so that several plastic needle insertion portions 20 among the plurality of plastic needle insertion portions 20 provided in the first rubber stopper 3 are surely positioned below the concave film portion 63. Has the required width in the direction. The concave film portion 63 in the illustrated example is formed in a fan shape that is divided into three in the circumferential direction. Secured. According to this embodiment, regardless of the circumferential positional relationship between the cap member 5 and the first rubber plug 3, at least three plastic needle insertion portions 20 are located under the concave portion 63 and can be used. ing. In addition, although the concave film part 63 of the illustrated example illustrates a shape in which the center is recessed in a U-shape in the longitudinal section in the radial direction, the shape in which the center is recessed in a V-shape in the longitudinal section in the radial direction. It may be. In this way, the plastic needle 110 can be easily stabbed into the center of the plastic needle insertion portion 20 by making the center concave in the radial longitudinal section.
[0041]
Further, as shown in FIG. 5A, the protrusions 61 and 62 in the illustrated example are arranged in the circumferential direction on the inner diameter side and the outer diameter side of the position where the plastic needle insertion portion 20 of the first rubber plug 3 is provided. Although it is continuous, since the plastic needle 110 pierces the concave film portion 63, it may be divided corresponding to the position where the concave film portion 63 is provided.
[0042]
The bag plug 60 is attached to the mouth 51 of the chemical solution bag 50 as in the first embodiment. When the plastic needle 110 is pierced into the bag plug 60, the plastic needle 110 is pierced from the concave film portion 63 of the guide portion 64 toward the plastic needle insertion portion 20 of the first rubber plug 3, and the guide portion 64 is recessed. The membrane portion 63, the first rubber plug 3, the second rubber plug 4, and the blocking wall 13 are pierced in order so that the tip of the plastic needle 110 reaches the chemical solution bag 50. At this time, the plastic needle 110 is made of plastic of the first rubber plug 3 by the arc-shaped protrusions 61 and 62 of the guide portion 64 provided on the inner diameter side and the outer diameter side of the plastic needle insertion portion 20 of the first rubber plug 3. The needle insertion unit 20 is guided so as to pierce straight. As a result, the plastic needle 110 is straightly inserted, so that the rubber plugs 3 and 4 are not easily cracked, and there is no problem that the drug solution bleeds out along the crack due to the capillary phenomenon. Further, since the plastic needle 110 is inserted into the first rubber stopper 3 by sliding on the concave film portion 63 of the pierced guide portion 64, the resistance at the time of insertion is also reduced. The operation of the concave film part 63 is the same as that of the concave film part 26 of the guide part 25 of the bag stopper 1 of the first embodiment described above (see FIGS. 1 and 4).
[0043]
According to the bag plug 60, the plastic needle insertion portions 20 of the first rubber plug 3 are provided at equal intervals in the circumferential direction, and the guide portion 64 provided on the cap member 5 is provided on the first rubber plug 3. Further, among the plurality of plastic needle insertion portions 20, a predetermined width is provided in the circumferential direction so that some of the plastic needle insertion portions 20 can be used reliably. Therefore, it is not necessary to perform the alignment in the circumferential direction with respect to 5, and the manufacturing work can be simplified.
[0044]
  more than,Guide partAlthough the bag stopper and chemical solution bag which were given to the cap member were illustrated, the present invention is not limited to this. For example,Guide sectionA member having the above function may be attached to the cap member separately from the cap member 5, or the first rubber plug 3 may have the function.
[0045]
  Next, as a third embodiment of the present invention, the first rubber plug 3Guide sectionThe bag stopper which gave the function as is illustrated.
[0046]
  As shown in FIGS. 6A and 6B, the bag stopper 70 has an annular shape having an inner diameter slightly larger than the outer diameter of the plastic needle 110 at the peripheral edge of the plastic needle insertion portion 20 provided in the first rubber stopper 71. A guide portion 73 is provided with a protrusion 72 protruding therefrom. The cap member 74 of the bag plug 70 according to this embodiment is the same as the first rubber plug 71.Upper edgePressing.
[0047]
Next, a bag stopper according to a fourth embodiment of the present invention will be described. As shown in FIG. 7, this bag stopper is characterized in that a portion 31 having an increased inner diameter is provided in the middle portion of the pore 22. In this case, by providing the portion 31 having an increased inner diameter at the intermediate portion of the pore 22, resistance when the plastic needle 110 is pierced at the intermediate portion of the pore 22 is relieved, so the plastic needle 110 is straightened. Easy to insert.
[0048]
As mentioned above, although embodiment of the bag stopper of this invention was described, this invention is not limited to said embodiment.
[0049]
For example, in the above-described embodiment, the rubber plug provided with the plastic needle insertion portion has a two-stage structure including the first rubber plug and the second rubber plug, and the gap S between the first rubber plug and the second rubber plug. However, the present invention is not limited to this. For example, a rubber plug provided with a plastic needle insertion portion may be simply mounted on the bag plug body. Further, the rubber plug may have a two-stage structure, and the gap S may not be provided between the first rubber plug and the second rubber plug.
[0050]
In the above-described embodiment, the peripheral edge portion of the second rubber plug is protruded upward to form the gap S between the second rubber plug 4 and the first rubber plug 3. Alternatively, the gap S may be formed by projecting the peripheral edge portion of the ring member downward, or the gap S may be formed by providing a ring-shaped spacer between the first rubber plug and the second rubber plug.
[0051]
In addition, the pore 22 formed in the bottom of the conical depression provided in the plastic needle insertion portion 20 is exemplified as one that does not penetrate the first rubber stopper before the plastic needle 110 is inserted. 22 may penetrate the first rubber stopper.
[0052]
【The invention's effect】
  Bag stopper according to the present inventionThe plastic needleCan be stabbed straight. For this reason, the rubber plug is hardly cracked, and there is no problem that the drug solution bleeds out along the crack due to the capillary phenomenon. In addition, the pierced plastic needle is firmly held,It is hard to drop off.
[Brief description of the drawings]
1A is a plan view of a bag stopper according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA in FIG.
2A is an enlarged longitudinal sectional view of a mouth portion of a chemical solution bag according to an embodiment of the present invention, and FIG. 2B is an overall view of the chemical solution bag.
FIG. 3 is a diagram showing a usage state of the chemical solution bag according to the embodiment of the present invention.
FIG. 4 is a diagram showing a usage state of a chemical liquid bag according to an embodiment of the present invention.
5A is a top view of a cap member showing a modified example of the bag plug, FIG. 5B is a sectional view taken along the line AA of FIG. 5A, and FIG. It is a BB cross-sectional arrow view.
FIG. 6 is a cross-sectional view showing a modified example of the bag stopper.
FIG. 7 is a cross-sectional view showing a modified example of the bag stopper.
FIG. 8 is a cross-sectional view showing a chemical solution bag.
FIG. 9 is a cross-sectional view showing a plastic needle.
[Explanation of symbols]
1 Bag stopper
2 Bag stopper body
3 1st rubber stopper
4 Second rubber stopper
5 Cap members
13 barrier
25 Guide section
S Gap between the first rubber plug and the second rubber plug

Claims (13)

In the bag stopper attached to the mouth of the chemical back,
A cylindrical bag plug body having a blocking wall for blocking the chemical side and the external side inside,
One or a plurality of plastic needle insertion portions, which are attached to the outside region of the barrier wall of the bag stopper body and whose concavity is usually formed in the bottom of the outer end surface, are formed in the bottom. A rubber stopper having,
A bag stopper comprising: a guide portion having a concave film portion recessed downward so as to be fitted into a recess of a plastic needle insertion portion . In the bag stopper attached to the mouth of the chemical back,
A cylindrical bag plug body having a blocking wall for blocking the chemical side and the external side inside,
One or a plurality of plastic needle insertion portions, which are attached to the outside region of the barrier wall of the bag stopper body and whose concavity is usually formed in the bottom of the outer end surface, are formed in the bottom. A rubber stopper having,
A bag stopper comprising: a plurality of guide pieces extending along a recess in the plastic needle insertion portion and a guide portion disposed in a circumferential direction along the recess in the plastic needle insertion portion . The bag stopper according to claim 1 , wherein the concave film portion has a rib on a surface thereof. The bag stopper according to claim 2, wherein the guide piece has a rib on a surface thereof. The bag stopper according to any one of claims 1 to 4, wherein the guide portion has a protrusion protruding in a vertical direction around a recess of the plastic needle insertion portion. In the bag stopper attached to the mouth of the chemical back,
A cylindrical bag plug body having a blocking wall for blocking the chemical side and the external side inside,
A rubber stopper attached to an area outside the barrier wall of the bag stopper body;
A plurality of plastic needle insertion portions that are formed in a predetermined radial distance at a predetermined radial distance on the outer side end surface of the rubber plug and are recessed in a conical shape in which normally closed pores are formed at the bottom,
A concave portion that can be pierced by a plastic needle, and a guide portion having a required width in the circumferential direction so as to cover several plastic needle insertion portions among a plurality of plastic needle insertion portions, Bag stopper to be used. In the bag stopper attached to the mouth of the chemical back,
A cylindrical bag plug body having a blocking wall for blocking the chemical side and the external side inside,
A rubber stopper attached to an area outside the barrier wall of the bag stopper body;
A plurality of plastic needle insertion portions that are provided at predetermined intervals in the circumferential direction at the same radial distance on the outer side end surface of the rubber plug, and are normally closed with a closed pore formed in the bottom, and
A bag stopper comprising a guide portion provided on a rubber stopper and provided with protrusions continuous in a circumferential direction on an inner diameter side and an outer diameter side of the plastic needle insertion portion. The bag stopper according to claim 7, wherein the guide portion includes a concave film portion that can be pierced with a plastic needle between the inner diameter side protrusion and the outer diameter side protrusion.   The bag stopper according to any one of claims 1 to 8, wherein a portion having an increased inner diameter is provided at an intermediate portion of the pore of the plastic needle insertion portion.   The rubber plug is attached to an external region of the bag plug body, and includes a first rubber plug having the plastic needle insertion portion, and a second rubber plug mounted between the first rubber plug and the blocking wall. It is comprised, The bag stopper in any one of Claim 1 to 9 characterized by the above-mentioned.   The bag plug according to claim 10, wherein a gap is provided between the first rubber plug and the second rubber plug.   The bag stopper according to claim 11, wherein a surface of the first rubber stopper facing the second rubber stopper is raised at a position corresponding to the plastic needle insertion portion.   A medical solution bag, wherein the bag stopper according to claim 1 is attached to a mouth portion.

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